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I cut out the stock muffler and replaced it with the 18" Magnaflow. Pretty easy except for I could have jacked the truck up to get some more work space. First pics are the stock setup. Second pics are where I cut the stock pipes. I cut the drivers side pipe farther forward and at the stock muffler in order to rotate it. I put a sleave over the pipe where I cut it at the front so that it wasnt just butted up. (also because I didnt cut it straight, well ok, mostly because I didnt cut it straight) With the dual 2 1/4" in and single 2 1/2" out the install is pretty easy. The tailpipe fits perfectly into the 2 1/2" side and the stock pipes from the front fit into the dual 2 1/4" side a little loose, but weldable. The sound is perfect, not too loud, but noticable when I want to hear it. It is perfect with the S&B intake.
 

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Discussion Starter #2
I could have also cut the drivers side a little farther back, but it still worked how I did it. There would have been a little more room for the welder though.
 

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Discussion Starter #3
Finished pics.
 

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Looks good! Yes, the S&B with the 18" Mag is a great combo.
 

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looks good. Any butt dyno impressions? Im thinking of doing a muffler swap after finding an 07/08 exhaust to go along with the CAI im going to install. How much did it run you?
 

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tre5 said:
I cut out the stock muffler and replaced it with the 18" Magnaflow. Pretty easy except for I could have jacked the truck up to get some more work space. First pics are the stock setup. Second pics are where I cut the stock pipes. I cut the drivers side pipe farther forward and at the stock muffler in order to rotate it. I put a sleave over the pipe where I cut it at the front so that it wasnt just butted up. (also because I didnt cut it straight, well ok, mostly because I didnt cut it straight) With the dual 2 1/4" in and single 2 1/2" out the install is pretty easy. The tailpipe fits perfectly into the 2 1/2" side and the stock pipes from the front fit into the dual 2 1/4" side a little loose, but weldable. The sound is perfect, not too loud, but noticable when I want to hear it. It is perfect with the S&B intake.
What Model# muffler did you use?
BTW nice job, did you weld it yourself?
 

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Discussion Starter #7

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where did you get your 2* advance from my dealer doesnt want to do it. and i have no problem driving down to goodyear to get it done.
 

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Discussion Starter #9
I got it at Peoria Nissan up on Bell and the 101. You need to talk to Brooke in Service. She is an advisor.
 

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That Magnaflow sounds good dont it....

I have the Magnaflow and the AEM Brute Force CAI, man that is a sweet sound combo.

Congrats
 

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What are the inside diameters of the pipes?:confused:

-- 2 going into the muffler???

-- The bigger single pipe coming out of the muffler???

Thanks in advance!:thedevil:
 

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I see you haven't done the axle vent mod yet ;)
 

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I have Magnaflow with stainless tips is nice to good exhaust;nice and deep sound
 
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